A single crystal furnace feeder

Abstract

The utility model discloses a single crystal furnace feeder, including feeding cylinder, discharge cylinder, anti -blocking subassembly and discharge subassembly, discharge cylinder fixed communication is in the feeding cylinder bottom end, the anti -blocking subassembly number is two groups and sets up respectively at the both sides of discharge cylinder, and the anti -blocking subassembly includes two fixed plates, and two fixed plates horizontal fixed connection are established on the inner wall of discharge cylinder, and the both ends of fixed plate are provided with moving link, and moving link penetrates fixed plate and with sliding connection, and the top between two moving links on same fixed plate is all fixedly connected with connecting plate, and the side wall opposite of two connecting plates is fixedly connected with a plurality of agitating rod, and the discharge cylinder inside below fixed plate is provided with driving part, and driving part is used for driving two connecting plates reciprocating motion simultaneously. Discharge subassembly sets up in the discharge cylinder below anti -blocking subassembly, and discharge subassembly is used for controlling the discharge of discharge cylinder. Can avoid the silicon material and get stuck in the feeder, guarantees that the feeder can smoothly add the silicon material to single crystal furnace crucible.

Description

Technical Field

[0001] This utility model relates to the field of monocrystalline silicon production technology, and in particular to a monocrystalline furnace feeder. Background Technology

[0002] Monocrystalline silicon is a silicon material with a basically complete atomic crystal structure. Its atoms are arranged in a periodic and orderly manner in three-dimensional space, exhibiting extremely high purity and uniform electrical, optical, and other physical properties. As a core basic material for the semiconductor and photovoltaic industries, monocrystalline silicon is grown into cylindrical single-crystal ingots using the Czochralski process. During monocrystalline silicon production, due to the limited capacity of the crucible and the limited amount of material that can be fed at one time into the single-crystal furnace, a feeder is needed to perform secondary feeding of the crucible within the furnace to meet the demand for large-size crystals and to reduce the number of furnace openings, thereby lowering energy consumption and time costs.

[0003] Existing single-crystal furnace feeders are prone to clogging during the feeding process, causing silicon material to become stuck inside the feeder and affecting the feeding of silicon material. For example, utility model patent CN220827494U discloses a single-crystal furnace feeder, including a feeding assembly, a switching assembly, and a driving assembly. The feeding assembly includes a feeding cylinder with an opening at its lower end. The switching assembly includes a pull rod and a bottom cone. The pull rod passes through the feeding cylinder, and the bottom cone is installed at the lower end of the pull rod. The driving assembly is connected to the pull rod and is used to drive the pull rod to move up and down so that the bottom cone can open or close the opening. The bottom cone includes a first sealing surface and a second sealing surface. The opening of the feeding cylinder is provided with a third sealing surface that cooperates with the first sealing surface and a fourth sealing surface that cooperates with the second sealing surface.

[0004] The aforementioned single-crystal furnace feeder, while effectively increasing the sealing area and preventing material leakage by employing a double-layer sealing surface design at the openings of the bottom cone and the feeding cylinder, still has a problem in actual use. When the pull rod is lowered to open the bottom cone, silicon material flows out through the gap between the bottom cone and the feeding cylinder. When there is a large amount of silicon material in the feeding cylinder, dead zones can easily form between the bottom cone and the various sealing surfaces, preventing silicon material from flowing out and thus affecting secondary feeding.

[0005] Therefore, it is necessary to develop a single-crystal furnace feeder to address the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a single crystal furnace feeder that can prevent silicon material from getting stuck in the feeder and ensure that the feeder can smoothly add silicon material into the single crystal furnace crucible.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model relates to a single crystal furnace feeder, which includes a feeding cylinder, a discharging cylinder, an anti-blocking component, and a discharging component, wherein the discharging cylinder is fixedly connected to the bottom end of the feeding cylinder; The anti-blocking components are in two sets and are respectively arranged on both sides of the discharge cylinder. Each anti-blocking component includes two fixed plates, which are horizontally fixedly connected to the inner wall of the discharge cylinder. Movable rods are provided at both ends of the fixed plates, which pass through the fixed plates and are slidably connected to them. A connecting plate is fixedly connected between the top ends of the two movable rods on the same fixed plate. Several stirring rods are fixedly connected to the side walls of the two connecting plates facing each other. A driving component is provided in the discharge cylinder below the fixed plates, which is used to simultaneously drive the two connecting plates to reciprocate up and down. The discharge assembly is disposed inside the discharge cylinder below the anti-blocking assembly, and the discharge assembly is used to control the discharge of material from the discharge cylinder.

[0008] Furthermore, the driving component includes a motor and a rotating shaft. The motor is fixedly connected to the outer wall of the discharge cylinder, and both ends of the rotating shaft are rotatably connected to the inner wall of the discharge cylinder. The output end of the motor is coaxially and fixedly connected to one end of the rotating shaft. Cams are sleeved and fixedly attached to both ends of the rotating shaft. A moving plate is fixedly connected to the bottom end of the moving rod on the same fixed plate. A rotating seat is fixedly connected to the bottom end of the moving plate. A roller that cooperates with the cam is rotatably connected to the rotating seat.

[0009] Furthermore, each of the bottom outer walls of the movable rod is fitted with a compression spring, the top end of the compression spring is fixedly connected to the bottom surface of the fixed plate, and the bottom end of the compression spring is fixedly connected to the top surface of the movable plate.

[0010] Furthermore, the discharge assembly includes several partitions, which are radially and evenly spaced and fixed on the outer wall of the rotating shaft. The partitions are located between the two cams. Two arc-shaped plates are fixedly connected to both ends of the middle position of the discharge cylinder, and the end of the partition away from the rotating shaft is in contact with the inner wall of the arc-shaped plate.

[0011] Furthermore, the two ends of the rotating shaft are coaxially fixedly connected to turntables, and the two ends of the partition are respectively fixedly connected to the side walls of the two turntables facing each other. The outer wall of the turntable is in contact with the inner wall of the arc-shaped plate. A feeding bin is formed between the two adjacent partitions and the two turntables.

[0012] Furthermore, both connecting plates are covered with protective covers, which are fixedly connected to the inner wall of the discharge cylinder and the top surface of the fixing plate, respectively.

[0013] Furthermore, several strip-shaped holes adapted to the stirring rod are vertically opened on the side walls of the two protective covers facing each other, and the stirring rod passes through the strip-shaped holes and is slidably connected to them.

[0014] Furthermore, the top surface of the protective cover is inclined, with the downward inclination direction facing the middle of the discharge cylinder.

[0015] Furthermore, a sealing cap is detachably connected to the top of the feeding cylinder.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. This utility model, through the setting of the anti-blocking component, drives the connecting plate to move up and down reciprocally, so that the stirring rod moves up and down in the discharge cylinder, continuously stirring the silicon material in the discharge cylinder, avoiding the formation of dead corners at the bottom of the discharge cylinder, preventing the silicon material from being blocked due to mutual squeezing, and ensuring that the silicon material can be smoothly transported to the crucible of the single crystal furnace.

[0017] 2. The discharge assembly controls the delivery of silicon material from the discharge cylinder into the crucible. Several baffles and turntables create independent feeding bins between adjacent baffles and turntables. When the motor drives the shaft, the baffles rotate, and the silicon material accumulated in the discharge cylinder falls sequentially into each feeding bin under gravity. After the feeding bin containing silicon material rotates 180°, the silicon material leaves the feeding bin and flows out of the discharge cylinder under gravity, thus completing the feeding process. When feeding stops, the motor stops driving the shaft, and the baffles stop rotating. At this point, the contact surface between the baffles and the curved plate forms a physical barrier, blocking the discharge port at the bottom of the discharge cylinder and preventing silicon material from falling, ensuring the discharge cylinder is sealed when feeding stops. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a cross-sectional view of the single crystal furnace feeder of this utility model; Figure 2 for Figure 1 A magnified view of part A in the middle; Figure 3 This is a cross-sectional view of the discharge cylinder of this utility model; Figure 4 for Figure 3 A magnified view of part B in the middle section.

[0020] Explanation of reference numerals in the attached drawings: 1. Feeding cylinder; 2. Discharge cylinder; 3. Anti-clogging component; 301. Fixed plate; 302. Moving rod; 303. Connecting plate; 304. Stirring rod; 305. Motor; 306. Rotating shaft; 307. Cam; 308. Moving plate; 309. Rotating seat; 310. Roller; 311. Compression spring; 312. Protective cover; 313. Strip hole; 4. Discharge component; 401. Partition plate; 402. Arc plate; 403. Turntable; 404. Feeding bin; 5. Sealing cover. Detailed Implementation

[0021] The core of this utility model is to provide a single crystal furnace feeder that can prevent silicon material from getting stuck in the feeder and ensure that the feeder can smoothly add silicon material into the single crystal furnace crucible.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] It is understood that all electrical components mentioned in this article are electrically connected to the main controller and power supply, and all electrical components mentioned in this article are conventional and known devices. This application will not elaborate further. The main controller can be a conventional and known device such as a computer that performs control. The control circuit of the main controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices. Therefore, this utility model will not explain the control method and circuit connection in detail. At the same time, all parts not described in detail in this utility model are common technologies known to those skilled in the art.

[0025] In one specific embodiment of this utility model, such as Figures 1-4 As shown, it includes a feeding cylinder 1, a discharging cylinder 2, an anti-blocking component 3, and a discharging component 4. The discharging cylinder 2 is fixedly connected to the bottom end of the feeding cylinder 1. The feeding cylinder 1 is used to store silicon material, while the discharging cylinder 2 transports the silicon material to the crucible of the single crystal furnace.

[0026] Two sets of anti-blocking components 3 are respectively installed on both sides of the discharge cylinder 2. The anti-blocking component 3 includes two fixed plates 301, which are horizontally fixed to the inner wall of the discharge cylinder 2. Movable rods 302 are provided at both ends of the fixed plates 301. The movable rods 302 pass through the fixed plates 301 and are slidably connected to them. A connecting plate 303 is fixedly connected between the top ends of the two movable rods 302 on the same fixed plate 301. Several stirring rods 304 are fixedly connected to the side walls opposite the two connecting plates 303. A driving component is provided in the discharge cylinder 2 below the fixed plates 301 to drive the two connecting plates 303 to move up and down reciprocally, thereby driving the stirring rods 304 to stir the silicon material and prevent blockage.

[0027] The discharge component 4 is installed in the discharge cylinder 2 below the anti-blocking component 3, and the discharge component 4 is used to control the discharge of the discharge cylinder 2.

[0028] In one specific embodiment of this utility model, such as Figures 2-4 As shown, the driving component includes a motor 305 and a rotating shaft 306. The motor 305 is fixedly connected to the outer wall of the discharge cylinder 2, and both ends of the rotating shaft 306 are rotatably connected to the inner wall of the discharge cylinder 2. The output end of the motor 305 is coaxially and fixedly connected to one end of the rotating shaft 306. Cams 307 are sleeved and fixed at both ends of the rotating shaft 306. A moving plate 308 is fixedly connected to the bottom end of the moving rod 302 on the same fixed plate 301. A rotating seat 309 is fixedly connected to the bottom end of the moving plate 308. A roller 310 that cooperates with the cam 307 is rotatably connected to the rotating seat 309.

[0029] When the motor 305 drives the rotating shaft 306 to rotate, the cam 307 rotates accordingly, and pushes the moving plate 308 and the moving rod 302 to move up and down through contact with the roller 310, thereby realizing the reciprocating motion of the connecting plate 303 and the stirring rod 304.

[0030] Specifically, a compression spring 311 is sleeved on the outer wall of the bottom end of the moving rod 302. The top end of the compression spring 311 is fixed to the bottom surface of the fixed plate 301, and the bottom end is fixed to the top surface of the moving plate 308. The compression spring 311 plays a buffering and resetting role. When the cam 307 pushes the roller 310 to raise the moving rod 302, the spring is compressed. When the cam 307 rotates away from the roller 310, the spring resets, causing the moving rod 302 to descend, ensuring that the stirring rod 304 moves stably up and down.

[0031] Specifically, the discharge assembly 4 includes several partitions 401, which are radially and evenly spaced on the outer wall of the rotating shaft 306. The partitions 401 are located between two cams 307. Two arc-shaped plates 402 are fixedly connected to both ends of the middle position of the discharge cylinder 2. The end of the partition 401 away from the rotating shaft 306 is in contact with the inner wall of the arc-shaped plate 402 to prevent silicon material from leaking out from the gap.

[0032] Specifically, the two ends of the rotating shaft 306 are coaxially fixedly connected to turntables 403, and the two ends of the partition plate 401 are fixedly connected to the side walls of the two turntables 403 respectively. The outer wall of the turntable 403 is in contact with the inner wall of the arc plate 402. A feeding bin 404 is formed between the two adjacent partition plates 401 and the two turntables 403.

[0033] When the rotating shaft 306 is driven to rotate by the motor 305, the partition 401 rotates accordingly. The silicon material falls sequentially into the feeding hopper 404 under gravity. After the feeding hopper 404 containing the silicon material rotates 180°, the silicon material leaves the feeding hopper 404 under gravity and flows out from the discharge cylinder 2, thus completing the feeding process. When the motor 305 stops rotating, the partition 401 and the arc-shaped plate 402 come into contact, blocking the discharge port and stopping the feeding.

[0034] In one specific embodiment of this utility model, such as Figure 2 As shown, both connecting plates 303 are covered with protective covers 312, which are fixedly connected to the inner wall of the discharge cylinder 2 and the top surface of the fixing plate 301, respectively. These covers are used to protect the internal structure and prevent silicon material from entering and interfering with the normal operation of the anti-clogging component 3.

[0035] Specifically, several strip-shaped holes 313 adapted to the stirring rod 304 are vertically opened on the side walls facing each other of the two protective covers 312. The stirring rod 304 passes through the strip-shaped holes 313 and is slidably connected to them, which not only ensures that the stirring rod 304 can move up and down normally, but also plays a certain protective role.

[0036] Specifically, the top surface of the protective cover 312 is inclined downwards towards the middle of the discharge cylinder 2, which facilitates the sliding of silicon material and prevents it from accumulating on the top surface of the protective cover 312 and affecting the operation of the device.

[0037] In one specific embodiment of this utility model, such as Figure 1 As shown, the top of the feeding cylinder 1 is connected to the sealing cover 5 by means of detachable connection such as threaded connection or snap-fit ​​connection. When the feeder is not in use, the sealing cover 5 can be closed to prevent dust and other impurities from entering the feeding cylinder 1 and contaminating the silicon material, thus ensuring the sealing of the feeding cylinder 1.

[0038] The working principle of this utility model is as follows: When using the single crystal furnace feeder, when silicon material needs to be added to the single crystal furnace, the motor 305 starts, driving the rotating shaft 306 and cam 307 to rotate. The cam 307 pushes the roller 310, causing the moving plate 308 and moving rod 302 to rise, compressing the spring 311. When the cam 307 rotates away from the roller 310, the spring returns to its original position, causing the moving rod 302 to descend. This cycle repeats, enabling the connecting plate 303 and the stirring rod 304 to move up and down reciprocally within the discharge cylinder 2, continuously agitating the silicon material and preventing it from accumulating and clogging at the bottom of the discharge cylinder 2. Simultaneously, the motor 305 drives the rotating shaft 306 to rotate, causing the partition plate 401 and turntable 403 to rotate, and the silicon material falls sequentially into the feeding bin 404 under gravity. After the feeding bin 404 containing silicon material rotates 180°, the silicon material flows out of the feeding bin 404, thus feeding the crucible. When feeding stops, motor 305 stops rotating, and partition 401 and arc plate 402 fit together to form a physical block, blocking the outlet and preventing silicon material from falling, thus ensuring the sealing of the discharge cylinder 2.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A single crystal furnace feeder, characterized in that: It includes a feeding cylinder (1), a discharging cylinder (2), an anti-blocking component (3), and a discharging component (4), wherein the discharging cylinder (2) is fixedly connected to the bottom end of the feeding cylinder (1); The number of anti-blocking components (3) is two sets and they are respectively arranged on both sides of the discharge cylinder (2). The anti-blocking components (3) include two fixed plates (301). The two fixed plates (301) are horizontally fixedly connected to the inner wall of the discharge cylinder (2). The fixed plates (301) are provided with moving rods (302) at both ends. The moving rods (302) pass through the fixed plates (301) and are slidably connected to them. The top ends of the two moving rods (302) on the same fixed plate (301) are fixedly connected to a connecting plate (303). Several stirring rods (304) are fixedly connected to the side walls opposite to the two connecting plates (303). A driving component is provided in the discharge cylinder (2) below the fixed plate (301). The driving component is used to simultaneously drive the two connecting plates (303) to move up and down reciprocally. The discharge component (4) is located inside the discharge cylinder (2) below the anti-blocking component (3), and the discharge component (4) is used to control the discharge of the discharge cylinder (2).

2. The single crystal furnace feeder according to claim 1, characterized in that: The driving component includes a motor (305) and a rotating shaft (306). The motor (305) is fixedly connected to the outer wall of the discharge cylinder (2). The two ends of the rotating shaft (306) are rotatably connected to the inner wall of the discharge cylinder (2). The output end of the motor (305) is coaxially fixedly connected to one end of the rotating shaft (306). Cams (307) are sleeved and fixed at both ends of the rotating shaft (306). A moving plate (308) is fixedly connected to the bottom end of the moving rod (302) on the same fixed plate (301). A rotating seat (309) is fixedly connected to the bottom end of the moving plate (308). A roller (310) that cooperates with the cam (307) is rotatably connected to the rotating seat (309).

3. The single crystal furnace feeder according to claim 2, characterized in that: The bottom outer wall of each movable rod (302) is fitted with a compression spring (311), the top end of the compression spring (311) is fixedly connected to the bottom surface of the fixed plate (301), and the bottom end of the compression spring (311) is fixedly connected to the top surface of the movable plate (308).

4. The single crystal furnace feeder according to claim 3, characterized in that: The discharge assembly (4) includes several partitions (401), which are radially and evenly spaced and fixed on the outer wall of the rotating shaft (306). The partitions (401) are located between the two cams (307). Two arc-shaped plates (402) are fixedly connected to both ends of the discharge cylinder (2) in the middle position. The end of the partition (401) away from the rotating shaft (306) is in contact with the inner wall of the arc-shaped plate (402).

5. The single crystal furnace feeder according to claim 4, characterized in that: The rotating shaft (306) is coaxially fixedly connected to the turntables (403) at both ends. The two ends of the partition (401) are respectively fixedly connected to the side walls of the two turntables (403) facing each other. The outer wall of the turntable (403) is in contact with the inner wall of the arc plate (402). A feeding bin (404) is formed between the two adjacent partitions (401) and the two turntables (403).

6. The single crystal furnace feeder according to claim 1, characterized in that: Both connecting plates (303) are covered with protective covers (312), and the protective covers (312) are fixedly connected to the inner wall of the discharge cylinder (2) and the top surface of the fixing plate (301), respectively.

7. The single crystal furnace feeder according to claim 6, characterized in that: Several strip-shaped holes (313) adapted to the stirring rod (304) are vertically opened on the side walls facing each other of the two protective covers (312). The stirring rod (304) passes through the strip-shaped holes (313) and is slidably connected to them.

8. The single crystal furnace feeder according to claim 6, characterized in that: The top surface of the protective cover (312) is inclined, with the downward inclination direction facing the middle position of the discharge cylinder (2).

9. The single crystal furnace feeder according to claim 1, characterized in that: The top of the feeding cylinder (1) is detachably connected to a sealing cap (5).

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